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SensorWeb Data Fusion in Large Arrays of Microsensors

SensorWeb Data Fusion in Large Arrays of Microsensors. MURI Review Meeting Introduction/Overview Alan S. Willsky September 22, 2003. The Day’s Agenda. Introduction/Overview Research Presentations Summary. Introduction/Overview Outline.

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SensorWeb Data Fusion in Large Arrays of Microsensors

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  1. SensorWebData Fusion in Large Arrays of Microsensors MURI Review Meeting Introduction/Overview Alan S. Willsky September 22, 2003

  2. The Day’s Agenda • Introduction/Overview • Research Presentations • Summary

  3. Introduction/Overview Outline • Setting the stage: Intellectual themes and research concentration areas • Facts, Statistics, and Such • What we have heard from the EAB/TAC • Outline of remaining presentations and how they fit

  4. Intellectual Themes • IT-1: Consistent (or manageably inconsistent) fusion of networked, myopic sensors • IT-2: Fusion of heterogeneous sensors in unstructured and uncertain environments • IT-3: Wireless networks, network communication and information theory

  5. Research Concentration Areas • RCA-1: (Self-)Calibration • RCA-2&3: Fundamental limits on fusion, network information theory, tradeoffs in local vs global processing • RCA-4: Bounds & characteristics of algorithms to ID minimum resources needed to detect, estimate, track… • RCA-5: Fusion Algorithms • RCA-6: Distributed Algorithms with guarantees on global behavior (both positive & negative!) • RCA-7: Create events/data for experiments and demos

  6. Funding, Timing, and Staffing • We are 3 years, 1 month into this program • Funding: We are on plan • Includes adjustments for delays in funding and other ARO-approved variations (e.g,. Sanjoy Mitter’s time this fall) • Principal Faculty/Investigators • Willsky, Mitter, Jaakkola, Fisher, Cetin, Tsitsiklis (MIT); Kulkarni, Verdu (Princeton); Kumar (Illinois) • Numerous post-docs, visitors, and grad students • MIT (19), Illinois (12), Princeton (12)

  7. Website: Continually growing record of accomplishments and activities • The Website: http://sensorweb.mit.edu

  8. Publications, Presentations, Results • Publications • Latest count: 113 publications • Includes a (growing) number of key invited journal papers • Presentations • Numerous internal and external talks • Continually growing record of invited, plenary, and keynote talks • Continuing participation in Battlefield Acoustics mtg. • Significant research results in all aspects of our intellectual agenda • See talks to follow, publications, summary at the end, website

  9. A few of our industrial/DoD interactions • With PARC (formerly Xerox PARC) • Joint Paper, Transition and Experimental Demo within SensIT program, Maurice Chu has joined PARC team • With ALPHATECH • Transition of fusion methods to several programs (Raptor, DARPA DTT program (with SenTech), DARPA ISP Program) • ARO SBIR Topic A03-050 • MURI research (Tsitsiklis) cited as foundational to the topic • With ARL: Numerous since last review • Visits to ARL by Verdu, Kumar • Battlefield Acoustics Mtg. (Willsky-Sadler, Pham, Srour, Moses) • Interactions with Sensors CTA (Falco, Moses) • Visits to MIT: Sadler, Moses • Extended follow-ups with ARL: Ihler, Fisher, Cetin, Malioutov

  10. Sampling of Academic Interactions • Berkeley/Stanford MURI • Post-doctoral positions of Drs. Sekhar Tatikonda and Martin Wainwright • Continuing interchange and reciprocal visits • MURI on Battlefield Visualization • Interaction with Prof. Pramod Varshney • Ohio State University • Collaboration with Prof. Randy Moses • Through Sensors CTA • Reciprocal visits (Moses, Fisher) • Utilization of our network-constrained estimation algorithms in Prof. Moses’ work • Several collaborative research projects initiated

  11. Standing Questions from the EAB/TAC - I • Time spent on the project • We are maintaining/exceeding levels anticipated (Mitter 4 mo., Willsky 3 mo., Kulkarni 2/3 mo., Kumar 2/3 mo., Jaakkola 2/3 mo., Verdu 2/3 mo.) • Cost-sharing • Substantial for faculty (Schools pay almost all AY time) • Even greater for students (More than twice as many students involved as are receiving direct support) • Plans for handling real data, for demos and/or paths to implementation • Variety of examples given in previous reviews • Further discussions embedded in talks this year

  12. What we heard from the EAB/TAC last year - I • Significant praise • Caliber of research • Conscientiousness of our efforts to meet MURI objectives and respond to suggestions • Several issues/requests made • Allow more time for discussion and questions • Fewer talks with more time between for informal discussions during breaks • Expand interactions with ARL • See preceding list plus discussions embedded in today’s presentations • Enhance collaboration among investigators • Talks today will make that collaboration more apparent

  13. What we heard from the EAB/TAC last year - II • Issues/requests continued • Make sure to consider communication constraints in the context of fusion objectives as well as limitations of low power • Several talks address problems related to this • Is “optimal” processing required if it implies global communications; can’t one achieve adequate performance with more “local” fusion? • See later talks • Make sure work is relevant to sensor modalities of interest to the Army • One of the purposes of our interactions with ARL • Also, see several talks today

  14. Agenda - I • 8:30 – 9:15 Lavery, Willsky:Welcome/Overview • 9:15 – 9:50 Cetin:A Sparse Signal Reconstruction Perspective for Source Localization with Sensor Arrays • IT-2, RCA-1 (also ties to RCA-4) • 9:55 – 10:30 Fisher (Kulkarni/Verdu):Information-Theoretic Approaches to Data Association and Fusion in Sensor Networks • IT-2, RCA-1,5 • 10:30 – 10:45 Break • 10:45 – 11:20 Willsky (Kumar):Network-Constrained Estimation • IT-1, RCA-4,5,6 (also ties to RCA-2&3)

  15. Agenda - II • 11:20 – 1:00 Lunch • 1:00 – 1:35 Jaakkola (Tsitsiklis):Using Heterogeneous Data Sources and Sequential Resource Management • IT-1, RCA-4,5,6 • 1:40 – 2:15 Kumar (Verdu/Tsitsiklis): Information Transfer in Wireless Networks for Distributed Sensing and Control • IT-2, RCA-2&3 • 2:15 – 2:30 Break

  16. Agenda - III • 2:30 – 3:10 Mitter/Chu/Willsky: Distributed Multiple Target Tracking and Information Architecture for Designing Applications on Ad Hoc Sensor Networks • IT-1, RCA-4,5,6 • 3:10 – 3:30 Willsky:Summary • 3:30 – 4:30 Government Caucus • 4:30 – 5:00 Preliminary Debrief

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